Adobe Flash in 2021
I still need Adobe Flash in 2021.
I have an old Cisco C240 server that is getting replaced this year, but the management console still uses Adobe Flash. For this case, I need to keep a VM with an old version of flash lying around to manage it.
- Download flash from the Internet Archive. I read that V32.0.0.363 is the last version without the kill switch, so that may work.
 - Install the Pale Moon browser. https://www.palemoon.org/
 - Copy 
libflashplayer.soto/usr/lib/mozilla/plugins(on Ubuntu 20.04, I had to manually create this dir:sudo mkdir -p /usr/lib/mozilla/plugins) - Pale Moon should find flash now.
 
This page might also be of use: https://gist.github.com/KuromeSan/56d8b724c0696b54f9f81994ae3591d1